198019822 has 32 divisors (see below), whose sum is σ = 398813184. Its totient is φ = 71215200.

The previous prime is 198019799. The next prime is 198019831. The reversal of 198019822 is 228910891.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47454 + ... + 51457.

It is an arithmetic number, because the mean of its divisors is an integer number (12462912).

Almost surely, 2^198019822 is an apocalyptic number.

198019822 is an abundant number, since it is smaller than the sum of its proper divisors (200793362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

198019822 is a wasteful number, since it uses less digits than its factorization.

198019822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98944.

The product of its (nonzero) digits is 20736, while the sum is 40.

The square root of 198019822 is about 14071.9516059429. The cubic root of 198019822 is about 582.8671175187.

The spelling of 198019822 in words is "one hundred ninety-eight million, nineteen thousand, eight hundred twenty-two".